I run this stuff in my 03 660. Is it a good oil for my 700? What do you guys recommend? (If you recommend, where do you pick it up also?) I will be doing the maintenance on my 08 and my dad's 06 and want to use the same parts and oil if I can.

I am also debating the Royal purple 10-40 motorcycle oil, comes out to $11.25/qt + shipping. Amsoil 0-40 synthetic is another option for $10.89/qt + shipping. Not stuck on Rotella T6, it's just accessible locally which is why I've been using it.

I use this oil in both my '01 660 and my '07 700. It's a great oil IMO and it's not worth it to me to spend the money for Amsoil or the other more expensive brands when I change my oil as often as I do. I've had no issues with Rotella, and will continue to run it in both of my bikes.

I use the t6 in all my cars.... But I was under the impression that the fully synthetic blend wasn't good for our wet clutches. So I just recently switched from using the valvoline atv oil to the shell t5 semi synthetic blend in my 660. I can't tell u if it makes any difference because I haven't rode my quad much since the last oil change. Just another option.

Though marketed as an engine oil for diesel trucks, Rotella oil has found popularity with motorcyclists as well. The lack of "friction modifiers" in Rotella means they do not interfere with wet clutch operations. (This is called a "shared sump" design, which is unlike automobiles which maintain separate oil reservoirs - one for the engine and one for the transmission). Used oil analysis (UOA) reports on BobIsTheOilGuy.com have shown wear metals levels comparable to oils marketed as motorcycle-specific." - Straight from rotella wiki. I know everything on the internet isn't true but its something to consider.

Though marketed as an engine oil for diesel trucks, Rotella oil has found popularity with motorcyclists as well. The lack of "friction modifiers" in Rotella means they do not interfere with wet clutch operations. (This is called a "shared sump" design, which is unlike automobiles which maintain separate oil reservoirs - one for the engine and one for the transmission). Used oil analysis (UOA) reports on BobIsTheOilGuy.com have shown wear metals levels comparable to oils marketed as motorcycle-specific." - Straight from rotella wiki. I know everything on the internet isn't true but its something to consider.